On 03/04/2023 04:12, DİREN ERDEM AYDIN wrote:
Thanks for the response Marcus appreciate it!
But can you explain more how can I use "constructed" filename that
includes frequency information? I have QT GUI Range which has ID
lo_freq, when I tried to insert that info into file sink's file
section like "C:\Users\aydindi\Desktop\sept_2\buff1_lo_freq.txt",
extracted file does not contain numerical freq info as expected..
I can handle multiple separated txt files in matlab using a for loop.
I would like to modify file sink like (' buff1_%d.txt ', lo_freq) but
I am not quite sure about the file section accepts this kind of input.
for i=1:6
f = fopen(sprintf('pll_re_1_3_%d.txt', i), 'rb');
rx_pll_re{i} = fread(f, Inf, 'float');
fclose all;
f = fopen(sprintf('pll_im_1_3_%d.txt', i), 'rb');
rx_pll_im{i} = fread(f, Inf, 'float');
fclose all;
end
The file sink block (I assume you're using GRC to build your
flow-graphs?) has a "filename" parameter. Like most parameters
in GRC, that parameter actually accepts a python expression, so:
"buff1_%d" % lo_freq
In that parameter field will do what you want.
I strongly suggest learning a bit of Python to use GRC.
Your "for loop" example isn't quite relevant, since GRC uses what's
called a "data flow" programming model. At its top level,
it's NOT a "procedural" programming environment.
On Mon, Apr 3, 2023 at 12:46 AM Marcus D. Leech
<patchvonbr...@gmail.com> wrote:
On 02/04/2023 17:41, DİREN ERDEM AYDIN wrote:
Dear all,
I would like to modify the file sink so that when I changed the
receiver frequency during simulation, the file sink will create a
new file and record new frequency data there. Is it possible to
do that? and where can I find the source code of the existing
file sink in gnu radio?
Regards,
dea
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You don't need to modify the filesink to do that. You just have
to use a "constructed" filename that includes frequency information.
When the filename changes, the filesink will automatically close
the current file and start a new one under the new name.
Gnu Radio source is on github:
https://github.com/gnuradio/gnuradio
gr-blocks/lib is where filesink_impl and filesink_base live.
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